Method and device for SBFD-based communication in communication system

Abstract

A method and a device for SBFD-based communication in a communication system are disclosed. This method for a terminal comprises the steps of: receiving a first signaling message for a first operation from a first TRP; receiving a second signaling message for a second SBFD operation from a second TRP; if performing the first operation and the second SBFD operation in a first time interval is indicated, selecting one of the first operation and the second SBFD operation on the basis of a predetermined criterion; and performing the selected operation in the first time interval.

Description

SBFD-based communication method and device in a communication system

[0001] The present disclosure relates to SBFD (subband full duplex) technology, and more particularly, to SBFD-based communication technology in a communication system supporting mTRP (multi-transmission and reception point).

[0002] Communication systems can be designed considering various scenarios, service requirements, and potential system compatibility. Considering spectral efficiency, the introduction of subband full duplex (SBFD) technology is being discussed in 5G communication systems (e.g., NR (new radio) communication systems) and / or beyond 5G communication systems (e.g., 6G communication systems). In communication systems supporting SBFD (e.g., 5G communication systems, 6G communication systems), communication nodes (e.g., base stations, terminals) can simultaneously transmit and receive signals and / or channels using the same time / frequency resources (e.g., the same time / frequency band). The same time / frequency resources can mean the same time resources and the same frequency resources. The communication system can support multi-transmission and reception point (mTRP) technology. Methods for SBFD-based communication will be needed in communication systems supporting mTRP technology.

[0003] The purpose of the present disclosure to solve the above problems is to provide a method and device for subband full duplex (SBFD)-based communication in a communication system supporting mTRP (multi-transmission and reception point).

[0004] A method of a terminal according to embodiments of the present disclosure for achieving the above object includes the steps of receiving a first signaling message for a first operation from a first TRP, receiving a second signaling message for a second SBFD operation from a second TRP, selecting one of the first operation and the second SBFD operation based on a preset criterion when performance of the first operation and the second SBFD operation is instructed in a first time interval, and performing the one operation in the first time interval, wherein the first operation is a UL operation, a DL operation, or a first SBFD operation.

[0005] In the case where the first operation and the second SBFD operation collide in the first time interval, the one operation can be selected, and "when the first time interval is a DL communication interval, the first operation includes DL communication, and the second SBFD operation includes UL communication" or "when the first time interval is a UL communication interval, the first operation includes the UL communication, and the second SBFD operation includes the DL communication", the first operation and the second SBFD operation can be determined to collide.

[0006] The step of selecting the one operation may include the step of comparing the first priority of the first operation with the second priority of the second SBFD operation, and the step of selecting the one operation having a higher priority among the first operation and the second SBFD operation.

[0007] The step of selecting the one action may include the step of comparing a first reception time of the first signaling message and a second reception time of the second signaling message, and the step of selecting the one action indicated by the most recently received one signaling message among the first signaling message and the second signaling message.

[0008] The step of selecting the one action may include the step of comparing the first CORESET ID for which the first signaling message is received and the second CORESET ID for which the second signaling message is received, and the step of selecting the one action indicated by the one signaling message having the lower CORESET ID among the first signaling message and the second signaling message.

[0009] The step of selecting the one action may include the step of checking the type of each of the first signaling message and the second signaling message, and the step of selecting the one action indicated by one signaling message corresponding to a type having a higher priority among the first signaling message and the second signaling message, wherein the type may be an RRC message, a MAC CE, or a DCI.

[0010] The method of the terminal may further include a step of performing an operation other than the one of the first operation and the second SBFD operation in a second time interval after the first time interval.

[0011] The first time interval may be set for TDD operation or unpaired spectrum operation, and a first subband among the frequency bands for the first time interval may be indicated as a UL subband or a DL subband by the second signaling message.

[0012] According to embodiments of the present disclosure for achieving the above object, a terminal includes at least one processor, wherein the at least one processor causes the terminal to receive a first signaling message for a first operation from a first TRP, receive a second signaling message for a second SBFD operation from a second TRP, select one of the first operation and the second SBFD operation based on a preset criterion when performance of the first operation and the second SBFD operation is instructed in a first time interval, and cause the terminal to perform the one operation in the first time interval, wherein the first operation may be a UL operation, a DL operation, or a first SBFD operation.

[0013] In the case where the first operation and the second SBFD operation collide in the first time interval, the one operation can be selected, and "when the first time interval is a DL communication interval, the first operation includes DL communication, and the second SBFD operation includes UL communication" or "when the first time interval is a UL communication interval, the first operation includes the UL communication, and the second SBFD operation includes the DL communication", the first operation and the second SBFD operation can be determined to collide.

[0014] When selecting the above one operation, the at least one processor may cause the terminal to compare the first priority of the first operation with the second priority of the second SBFD operation, and select the one operation having a higher priority among the first operation and the second SBFD operation.

[0015] When selecting the one action, the at least one processor may cause the terminal to compare a first reception time of the first signaling message and a second reception time of the second signaling message, and select the one action indicated by the most recently received one of the first signaling message and the second signaling message.

[0016] When selecting the one action, the at least one processor may cause the terminal to compare the first CORESET ID for which the first signaling message is received and the second CORESET ID for which the second signaling message is received, and select the one action indicated by the one signaling message having the lower CORESET ID among the first signaling message and the second signaling message.

[0017] When selecting the one operation, the at least one processor may cause the terminal to check the types of each of the first signaling message and the second signaling message, and select the one operation indicated by one signaling message corresponding to a type having a higher priority among the first signaling message and the second signaling message, wherein the type may be an RRC message, a MAC CE, or a DCI.

[0018] The at least one processor may further cause the terminal to perform an operation other than the one of the first operation and the second SBFD operation in a second time interval after the first time interval.

[0019] The first time interval may be set for TDD operation or unpaired spectrum operation, and a first subband among the frequency bands for the first time interval may be indicated as a UL subband or a DL subband by the second signaling message.

[0020] According to the present disclosure, a terminal can receive a first signaling message indicating a first operation from a first transmission and reception point (TRP), and can receive a second signaling message indicating a subband full duplex (SBFD) operation from a second TRP. If the first operation and the SBFD operation collide in a first time interval, the terminal can select one of the first operation and the SBFD operation based on a preset criterion, and perform the selected one. Accordingly, communication in a communication system can be performed efficiently, and the performance of the communication system can be improved.

[0021] Figure 1 is a conceptual diagram illustrating embodiments of a communication system.

[0022] FIG. 2 is a block diagram illustrating embodiments of communication nodes in a communication system.

[0023] FIG. 3 is a conceptual diagram illustrating embodiments of a QCL information transmission procedure through TCI state setting and instruction in a communication system.

[0024] FIG. 4 is a conceptual diagram illustrating embodiments of a TCI state activation / deactivation MAC CE structure in a communication system.

[0025] FIG. 5 is a conceptual diagram illustrating embodiments of a TCI status indication MAC CE in a communication system.

[0026] Figure 6 is a conceptual diagram illustrating examples of slot settings according to slot formats in a communication system.

[0027] FIG. 7 is a conceptual diagram illustrating embodiments of a method for allocating one or more operating modes within a resource interval.

[0028] FIG. 8 is a conceptual diagram illustrating embodiments of a method for allocating one or more operating modes within a resource interval.

[0029] FIG. 9 is a conceptual diagram illustrating embodiments of a method for allocating one or more operating modes within a resource interval.

[0030] Figure 10 is a conceptual diagram illustrating embodiments of a SBFD setting method.

[0031] FIG. 11a is a conceptual diagram illustrating embodiments of a single DCI-based mTRP communication method.

[0032] Figure 11b is a conceptual diagram illustrating embodiments of a multi-DCI based mTRP communication method.

[0033] Fig. 12 is a conceptual diagram illustrating embodiments of SBFD operation based on mTRP.

[0034] Figure 13 is a conceptual diagram illustrating examples of resource allocation by mTRP.

[0035] Figure 14 is a conceptual diagram illustrating a non-alignment situation between single DCI-based mTRP operation and SBFD operation.

[0036] Figure 15 is a conceptual diagram illustrating a non-alignment situation between a single DCI-based mTRP operation and an SBFD operation.

[0037] Figure 16 is a flowchart illustrating the operation of a terminal in a non-aligned situation.

[0038] Figure 17 is a conceptual diagram illustrating the operation of a terminal in a non-aligned situation.

[0039] Figure 18 is a flowchart illustrating the operation of a terminal in a non-aligned situation.

[0040] Figure 19 is a conceptual diagram illustrating the operation of a terminal in a non-aligned situation.

[0041] This disclosure may be subject to various modifications and various embodiments. Specific embodiments are illustrated and described in detail in the drawings. However, this is not intended to limit the disclosure to specific embodiments, but rather to encompass all modifications, equivalents, and alternatives falling within the spirit and technical scope of the disclosure.

[0042] While terms such as "first" and "second" may be used to describe various components, these components should not be limited by these terms. These terms are used solely to distinguish one component from another. For example, without departing from the scope of the present disclosure, a first component could be referred to as a "second component," and similarly, a second component could also be referred to as a "first component." The term "and / or" encompasses any combination of multiple related items or any one of multiple related items.

[0043] In embodiments of the present disclosure, “at least one of A and B” may mean “at least one of A or B” or “at least one of combinations of one or more of A and B.” Furthermore, in embodiments of the present disclosure, “at least one of A and B” may mean “at least one of A or B” or “at least one of combinations of one or more of A and B.”

[0044] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components intervening. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components intervening.

[0045] The terminology used in this disclosure is only used to describe specific embodiments and is not intended to limit the present disclosure. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this disclosure, it should be understood that the terms "comprises" or "has" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0046] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which this disclosure pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and shall not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0047] Hereinafter, preferred embodiments of the present disclosure will be described in more detail with reference to the attached drawings. In order to facilitate an overall understanding in describing the present disclosure, identical reference numerals will be used for identical components in the drawings, and redundant descriptions of identical components will be omitted.

[0048] A communication system to which embodiments according to the present disclosure are applied will be described. The communication system may be a 4G communication system (e.g., a long-term evolution (LTE) communication system, an LTE-A communication system), a 5G communication system (e.g., a new radio (NR) communication system), a 6G communication system, etc. The 4G communication system can support communication in a frequency band of 6 GHz or less, and the 5G communication system and / or the 6G communication system can support communication in a frequency band of 6 GHz or more as well as a frequency band of 6 GHz or less.

[0049] A communication system (e.g., a communication network) to which embodiments of the present invention are applied may include a non-terrestrial network (NTN). 4G communication systems, 5G communication systems, 6G communication systems, and the like may be classified as terrestrial networks. The NTN may operate based on 4G communication technology, 5G communication technology, and / or 6G communication technology. The NTN may support communication in frequency bands above 6 GHz as well as in frequency bands below 6 GHz.

[0050] The communication systems to which embodiments according to the present disclosure are applied are not limited to those described below, and the embodiments according to the present disclosure can be applied to various communication systems. Here, the term "communication system" may be used interchangeably with "communication network." "LTE" may indicate a "4G communication system," an "LTE communication system," or an "LTE-A communication system." "NR" may indicate a "5G communication system" or an "NR communication system."

[0051] In an embodiment, “an operation (e.g., a transmission operation) is set to a communication node” may mean that “setting information for the operation (e.g., an information element, a parameter)” and / or “information instructing performance of the operation” are signaled to the communication node. In other words, “an operation (e.g., a transmission operation) is set to a communication node” may mean that the communication node receives “setting information for the operation (e.g., an information element, a parameter)” and / or “information instructing performance of the operation.” “An information element (e.g., a parameter) is set to a communication node” may mean “the information element is signaled to the communication node (e.g., the communication node receives the information element).” The signaling may be at least one of SI (system information) signaling (e.g., transmission of a system information block (SIB) and / or a master information block (MIB)), RRC signaling (e.g., transmission of RRC parameters and / or upper layer parameters), MAC CE (control element) signaling, or PHY signaling (e.g., transmission of DCI (downlink control information), UCI (uplink control information), and / or SCI (sidelink control information)). The signaling may mean a transmission operation and / or a reception operation of a signaling message.

[0052] In the present disclosure, a signal may have a meaning that includes not only a signal but also a channel. A channel may have a meaning that includes not only a channel but also a signal. Time may mean a time point or a duration. A time point may mean time. Time and a time point may be used interchangeably. The reception time of a signal and / or channel may mean the reception start time or the reception end time. The transmission time of a signal and / or channel may mean the transmission start time or the transmission end time.

[0053] In the present disclosure, the network may include a wireless internet such as WiFi (wireless fidelity), a mobile internet such as WiBro (wireless broadband internet) and / or WiMax (world interoperability for microwave access), a 2G mobile communication network such as GSM (global system for mobile communication) and / or CDMA (code division multiple access), a 3G mobile communication network such as WCDMA (wideband code division multiple access) and / or CDMA2000, a 3.5G mobile communication network such as HSDPA (high speed downlink packet access) and / or HSUPA (high speed uplink packet access), a 4G mobile communication network such as an LTE (long term evolution) network or an LTE-A (Advanced) network, a 5G mobile communication network, a 6G mobile communication network, etc.

[0054] In the present disclosure, a terminal may be referred to as a user equipment (UE), a terminal, an access terminal, a mobile terminal, a station, a subscriber station, a mobile station, a portable subscriber station, a node, a device, an apparatus, etc.

[0055] Desktop computers, laptop computers, tablet PCs, wireless phones, mobile phones, smart phones, smart watches, smart glasses, e-book readers, portable multimedia players (PMPs), portable game consoles, navigation devices, digital cameras, digital multimedia broadcasting (DMB) players, digital audio recorders, digital audio players, digital picture recorders, digital picture players, digital video recorders, digital video players, etc. capable of communicating with terminals can be used.

[0056] In the present disclosure, a base station may be referred to as a NodeB, an evolved NodeB, a base transceiver station (BTS), an eNB, a gNB, a radio base station, a radio transceiver, an access point, an access node, a road side unit (RSU), a digital unit (DU), a cloud digital unit (CDU), a radio remote head (RRH), a radio unit (RU), a transmission point (TP), a transmission and reception point (TRP), a relay node, etc.

[0057] Figure 1 is a conceptual diagram illustrating embodiments of a communication system.

[0058] Referring to FIG. 1, a communication system (100) may include a plurality of communication nodes (110-1, 110-2, 110-3, 120-1, 120-2, 130-1, 130-2, 130-3, 130-4, 130-5, 130-6). The plurality of communication nodes may support 4G communication (e.g., long term evolution (LTE), advanced LTE-A (LTE-A), 5G communication (e.g., new radio (NR)), 6G communication, etc.) specified in the 3rd generation partnership project (3GPP) standard. 4G communication may be performed in a frequency band of 6 GHz or less, and 5G communication and / or 6G communication may be performed in a frequency band of 6 GHz or more as well as a frequency band of 6 GHz or less.

[0059] For example, for 4G communication, 5G communication, and / or 6G communication, multiple communication nodes may use a communication protocol based on CDMA (code division multiple access), a communication protocol based on WCDMA (wideband CDMA), a communication protocol based on TDMA (time division multiple access), a communication protocol based on FDMA (frequency division multiple access), a communication protocol based on OFDM (orthogonal frequency division multiplexing), a communication protocol based on Filtered OFDM, a communication protocol based on CP (cyclic prefix)-OFDM, a communication protocol based on DFT-s-OFDM (discrete Fourier transform-spread-OFDM), a communication protocol based on OFDMA (orthogonal frequency division multiple access), a communication protocol based on SC (single carrier)-FDMA, a communication protocol based on NOMA (Non-orthogonal Multiple Access), a communication protocol based on GFDM (generalized frequency division multiplexing), a communication protocol based on FBMC (filter bank multi-carrier), a communication protocol based on UFMC (universal filtered multi-carrier), and a communication protocol based on SDMA (Space Division Multiple Access). It can support communication protocols, etc.

[0060] The communication system (100) may further include a core network. If the communication system (100) supports 4G communication, the core network may include a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), a mobility management entity (MME), etc. If the communication system (100) supports 5G communication, the core network may include a user plane function (UPF), a session management function (SMF), an access and mobility management function (AMF), etc.

[0061] Meanwhile, each of the plurality of communication nodes (110-1, 110-2, 110-3, 120-1, 120-2, 130-1, 130-2, 130-3, 130-4, 130-5, 130-6) constituting the communication system (100) may have the following structure.

[0062] FIG. 2 is a block diagram illustrating embodiments of communication nodes in a communication system.

[0063] Referring to FIG. 2, a communication node (200) may include at least one processor (210), a memory (220), and / or a transmission / reception device (230) that is connected to a network and performs communication. The communication node (200) may further include an input interface device (240), an output interface device (250), a storage device (260), etc. Each component included in the communication node (200) may be connected by a bus (270) and communicate with each other.

[0064] Each component included in the communication node (200) may be connected through an individual interface or individual bus centered around the processor (210), rather than a common bus (270). For example, the processor (210) may be connected to at least one of a memory (220), a transceiver (230), an input interface device (240), an output interface device (250), or a storage device (260) through a dedicated interface.

[0065] The processor (210) can execute program commands stored in at least one of the memory (220) and the storage device (260). The processor (210) may refer to a central processing unit (CPU), a graphics processing unit (GPU), and / or a dedicated processor in which methods according to embodiments of the present disclosure are performed. Each of the memory (220) and the storage device (260) may be configured with at least one of a volatile storage medium or a non-volatile storage medium. For example, the memory (220) may be configured with at least one of a read-only memory (ROM) or a random access memory (RAM).

[0066] Referring again to FIG. 1, the communication system (100) may include a plurality of base stations (110-1, 110-2, 110-3, 120-1, 120-2) and a plurality of terminals (130-1, 130-2, 130-3, 130-4, 130-5, 130-6). The communication system (100) including the base stations (110-1, 110-2, 110-3, 120-1, 120-2) and the terminals (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) may be referred to as an “access network.” The first base station (110-1), the second base station (110-2), and the third base station (110-3) can each form a macro cell. The fourth base station (120-1) and the fifth base station (120-2) can each form a small cell. The fourth base station (120-1), the third terminal (130-3), and the fourth terminal (130-4) can be within the cell coverage of the first base station (110-1). The second terminal (130-2), the fourth terminal (130-4), and the fifth terminal (130-5) can be within the cell coverage of the second base station (110-2). The fifth base station (120-2), the fourth terminal (130-4), the fifth terminal (130-5), and the sixth terminal (130-6) may be within the cell coverage of the third base station (110-3). The first terminal (130-1) may be within the cell coverage of the fourth base station (120-1). The sixth terminal (130-6) may be within the cell coverage of the fifth base station (120-2).

[0067] Here, each of the plurality of base stations (110-1, 110-2, 110-3, 120-1, 120-2) may be referred to as a NodeB, an evolved NodeB, a gNB, a BTS (base transceiver station), a radio base station, a radio transceiver, an access point, an access node, etc. Each of the plurality of terminals (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) may be referred to as a UE (user equipment), a terminal, an access terminal, a mobile terminal, a station, a subscriber station, a mobile station, a portable subscriber station, a node, a device, etc.

[0068] Meanwhile, each of the plurality of base stations (110-1, 110-2, 110-3, 120-1, 120-2) may operate in a different frequency band or may operate in the same frequency band. Each of the plurality of base stations (110-1, 110-2, 110-3, 120-1, 120-2) may be connected to each other via an ideal backhaul link or a non-ideal backhaul link, and may exchange information with each other via the ideal backhaul link or the non-ideal backhaul link. Each of the plurality of base stations (110-1, 110-2, 110-3, 120-1, 120-2) may be connected to the core network via the ideal backhaul link or the non-ideal backhaul link. Each of the plurality of base stations (110-1, 110-2, 110-3, 120-1, 120-2) can transmit signals and / or channels received from the core network to the corresponding terminals (130-1, 130-2, 130-3, 130-4, 130-5, 130-6), and can transmit signals and / or channels received from the corresponding terminals (130-1, 130-2, 130-3, 130-4, 130-5, 130-6) to the core network.

[0069] In a communication system (e.g., a 5G communication system), downlink control information (DCI) may be transmitted to a terminal. The DCI may be transmitted to the terminal based on a DCI format. The DCI format may be defined as shown in Table 1 below. Table 1 may be an example of a DCI format, and other DCI formats may be used, and the DCI format may not be limited to a specific form.

[0070] DCI Format Usage 0_0 Scheduling of PUSCH in one cell 0_1 Scheduling of one or more PUSCHs in one cell, indication of downlink feedback information for CG (configured grant) PUSCH (e.g., CG-DFI (downlink feedback information)) 0_2 Scheduling of PUSCH in one cell 1_0 Scheduling of PDSCH in one cell 1_1 Scheduling of PDSCH and / or triggering of one-shot HARQ-ACK codebook feedback in one cell 1_2 Scheduling of PDSCH in one cell 2_0 Notifying a group of UEs of slot format, available RB sets, channel occupancy time (COT) duration and search space set group (SSSG) switching 2_1 Notifying a group of UEs of PRB(s) and OFDM symbol(s) that can be assumed not to be transmitted to the UE 2_2 Transmission of transmission power control (TPC) commands for PUCCH and PUSCH 2_3 By one or more UEs Used for transmitting a TPC command group for transmitting a sounding reference signal (SRS) 2_4 Notifying a group of UEs of the PRB(s) and OFDM symbol(s) for which the UE cancels the corresponding UL transmission 2_5 Notifying the availability of soft resources 2_6 Notifying power saving information for one or more UEs outside of the DRX activation time 3_0 Scheduling NR sidelink in one cell 3_1 Scheduling LTE sidelink in one cell

[0071] DCI may include downlink control information for one or more cells. DCI may be associated with one RNTI. DCI may be encoded in the following order: 1) information element multiplexing, 2) CRC (cyclic redundancy check) addition, 3) channel coding, and 4) rate matching. Decoding of DCI may be performed by considering the above encoding steps. "A specific DCI being associated with one RNTI" may mean "CRC parity bits of the specific DCI being scrambled by the one RNTI."

[0072] Referring to Table 1, a DCI may include one or more PUSCH scheduling information for a cell. The CRC of DCI format 0_1 ​​may be scrambled by a C-RNTI, a CS-RNTI (configured scheduling-RNTI), an SP-CSI-RNTI (semi-persistent CSI RNTI), or an MCS-C-RNTI (modulation coding scheme cell RNTI). DCI format 0_1 ​​may include at least one of the following information elements:

[0073] □ DCI Format Identifier (1 bit): An indicator indicating that it is a UL DCI format. For DCI format 0_1, the DCI format identifier can always be set to 0.

[0074] □ Carrier indicator (0 or 3 bits): An indicator indicating the CC (component carrier) scheduled by DCI.

[0075] □ DFI flag (0 or 1 bit): CG downlink feedback information (CG-DFI) indicator.

[0076] - When DCI format 0_1 ​​is used to indicate CG-DFI (i.e., when the DFI flag is set to 1), at least one of the following fields may be used:

[0077] □ HARQ-ACK bitmap (16 bits): The order of the bitmap for mapping the HARQ process index can be such that the HARQ process index is mapped in ascending order from MSB to LSB of the bitmap. A bit set to 1 in the bitmap can indicate an ACK, and a bit set to 0 in the bitmap can indicate a NACK.

[0078] □ TPC command for scheduled PUSCH (2 bits)

[0079] □ All the remaining bits in DCI format 0_1 ​​are set to zero.

[0080] - If DCI format 0_1 ​​is not used to indicate CG-DFI (e.g., if the DFI flag is absent or the DFI flag is set to 0), at least one of the following fields may be used:

[0081] □ UL / SUL indicator (0 or 1 bit): supplementary UL indicator.

[0082] □ Bandwidth part indicator (0, 1, or 2 bits): An indicator that indicates which part of the uplink bandwidth set for the terminal is to be activated.

[0083] □ Frequency domain resource assignment: An indicator for allocating frequency domain resources.

[0084] □ Time domain resource assignment: A directive for allocating time domain resources.

[0085] □ Frequency hopping flag (0 or 1 bit): Frequency domain hopping indicator.

[0086] □ Modulation and coding scheme (5 bits)

[0087] □ New data indicator (NDI): An indicator that indicates whether the allocated data is new data or retransmitted data.

[0088] □ Redundancy version (RV): An indicator for the RV value when applying channel coding to allocated data.

[0089] □ HARQ (hybrid automatic repeat request) process number (4 bits): HARQ process indicator to be assigned to the data being scheduled.

[0090] □ TPC command for scheduled PUSCH (2 bits): TPC indicator.

[0091] □ SRS resource indicator: Aperiodic SRS resource selection indicator.

[0092] □ Precoding information and number of layers: Indicators of the number of precoding and transmission layers to be used when transmitting PUSCH.

[0093] □ Antenna ports: Indicator for the uplink antenna ports to be used when transmitting PUSCH.

[0094] □ SRS request: Indicator of whether to transmit aperiodic SRS.

[0095] □ CSI request: An indicator of whether and how channel status information should be reported.

[0096] □ PTRS (phase-noise tracking reference signal) - DMRS (demodulation reference signal) association: An indicator indicating the relationship between the uplink PTRS antenna port and the DMRS antenna port.

[0097] □ DMRS sequence initialization: An indicator for the DMRS sequence initialization value during OFDM-based uplink transmission.

[0098] □ UL-SCH indicator: An indicator indicating whether the PUSCH includes an UL-SCH (uplink shared channel). A PUSCH that does not include an UL-SCH may include CSI.

[0099] □ Open-loop power control parameter set indication: OLPC (open-loop power control) indication.

[0100] □ Priority indicator: Uplink transmission priority indicator.

[0101] □ Invalid symbol pattern indicator: An indicator of whether an invalid symbol pattern set by the upper layer is applied.

[0102] Meanwhile, the CRC of DCI format 1_1 may be scrambled by C-RNTI, CS-RNTI, or MCS-C-RNTI. DCI format 1_1 may include at least one of the following information elements.

[0103] □ DCI Format Identifier (1 bit): An indicator indicating that it is a DL DCI format. For DCI format 1_1, the DCI format identifier is always set to 1.

[0104] □ Carrier indicator (0 or 3 bits): An indicator indicating the CC scheduled by DCI.

[0105] □ Bandwidth Part Indicator (0, 1, or 2 bits): An indicator that indicates which bandwidth part among the downlink bandwidth parts set to the terminal will be activated.

[0106] □ Frequency domain resource allocation: An indicator for allocating frequency domain resources.

[0107] □ Time domain resource allocation: Directive for allocating time domain resources.

[0108] □ PRB bundling size indicator: An indicator indicating the PRB bundling type (e.g., static or dynamic) and size.

[0109] □ Rate Matching Indicator: An indicator that indicates the rate matching pattern set by the upper layer.

[0110] □ ZP CSI-RS trigger: Application indicator of aperiodic ZP (zero-power) CSI-RS.

[0111] □ MCS, NDI, and RV fields for transmission block 1.

[0112] □ MCS, NDI, and RV fields for transport block 2.

[0113] □ HARQ Process Number: Indicator of the HARQ process to be assigned to the scheduled data.

[0114] □ Downlink assignment index (DAI): DAI indicator for HARQ-ACK codebook generation in TDD (time division duplex) operation.

[0115] □ TPC command for scheduled PUCCH: Power control indicator for PUCCH transmission.

[0116] □ PUCCH resource indicator: An indicator of the PUCCH resource on which HARQ-ACK information for the allocated PDSCH or a predefined PDSCH set is transmitted.

[0117] □ PDSCH-to-HARQ feedback timing indicator: An indicator for the time domain offset between PDSCH transmission and PUCCH transmission.

[0118] □ Antenna port(s): Indicator of the antenna port to be used for PDSCH transmission and reception.

[0119] □ Transmission configuration indication (TCI): An indicator of TCI information used for PDSCH transmission and reception.

[0120] □ SRS request: Aperiodic SRS transmission indicator.

[0121] □ DMRS sequence initialization: Indicator of the DMRS sequence initialization value used for PDSCH transmission and reception.

[0122] □ Priority indicator: Priority indicator for PDSCH reception.

[0123] Meanwhile, some DCI formats can be used to convey the same control information to more than one terminal. The CRC of DCI format 2_3 can be scrambled by the Transmit Power Control-Sounding Reference signal-RNTI (TPC-SRS-RNTI). DCI format 2_3 can include at least one of the following information elements.

[0124] □ Block number 1, block number 2, ..., block number B: Indicators indicating the resource area to which DCI format 2_3 is applied. The starting part of the block can be set by the upper layer parameter startingBitOfFormat2-3 or startingBitOfFormat2-3SUL-v1530.

[0125] - "srs-TPC-PDCCH-Group = When type A is set in the terminal and PUCCH and / or PUSCH do not exist in the terminal" or "When a terminal with SRS power control not related to PUSCH power control performs uplink transmission", one block can be set in the upper layer, and the fields below can be defined for the block.

[0126] □ SRS Request (0 or 2 bits): Aperiodic SRS transmission indicator.

[0127] □ TPC command number 1, TCP command number 2, ..., TPC command number N: Uplink power control indicator applied to the UL carrier indicated by cc-IndexInOneCC-Set.

[0128] - When "srs-TPC-PDCCH-Group = Type B is set to the terminal and PUCCH and / or PUSCH do not exist in the terminal" or "a terminal with SRS power control not related to PUSCH power control performs uplink transmission", one or more blocks may be set by the upper layer, and the fields below may be defined for each of the one or more blocks.

[0129] □ SRS Request (0 or 2 bits): Aperiodic SRS transmission indicator.

[0130] □ TPC command (2 bits)

[0131] Meanwhile, some DCI formats can be used to convey the same control information to more than one terminal. The CRC of DCI format 2_0 can be scrambled by the slot format indicator (SFI)-RNTI. DCI format 2_0 can be used to notify information such as slot format, COT duration, available RB set, and SSSG (search space set group) switching. DCI format 2_0 can include at least one of the following information elements.

[0132] □ When slotFormatCombToAddModList is set

[0133] ○ Slot format indicator 1, slot format indicator 2, ..., slot format indicator N

[0134] □ If availableRB-SetsToAddModList-r16 is set

[0135] ○ Available RB set indicator 1, Available RB set indicator 2, ..., Available RB set indicator N1

[0136] □ When co-DurationsPerCellToAddModList-r16 is set

[0137] ○ DOT Duration Indicator 1, COT Duration Indicator 2, ..., COT Duration Indicator N2

[0138] □ If searchSpaceSwitchTriggerToAddModList-r16 is set

[0139] ○ SSSG switching flag 1, SSSG switching flag 2, ..., SSSG switching flag M

[0140] The size of DCI format 2_0 can be set by the upper layer to one of the values ​​between 1 and 128 bits.

[0141] Meanwhile, DCI format 2_5 can be used to announce the availability of soft-type resources for an integrated access and backhaul (IAB) node. The CRC of DCI format 2_5 can be scrambled by an available indicator (AI)-RNTI. DCI format 2_5 can include the following information elements.

[0142] □ Availability indicator 1, availability indicator 2, ..., availability indicator N

[0143] The size of DCI format 2_5 can be set by the upper layer to one of the values ​​less than or equal to 128 bits.

[0144] Meanwhile, the base station can transmit the configuration information of CORESET0 and search space0 to the terminal as shown in Table 2 below. The terminal can receive the configuration information of CORESET0 and search space0 from the base station.

[0145] PDCCH-ConfigSIB1 ::= SEQUENCE {controlResourceSetZerosearchSpaceZero}ControlResourceSetZero: Indicates the setting value (0~15) of CORESET0 within the initial BWPSearchSpaceZero: Indicates the setting value (0~15) of search space0 within the initial BWP

[0146] The terminal may refer to the upper layer settings defined in Tables 3 to 6 for cell-specific PDCCH monitoring.

[0147] PDCCH-ConfigCommon ::= SEQUENCE {controlResourceSetZero: Indicates the configuration value (0 to 15) of CORESET0 within the initial BWPcommonControlResourceSet: Sets the common CORESET by referring to the CORESET configurationsearchSpaceZero: Indicates the configuration value (0 to 15) of search space0 within the initial BWPcommonSearchSpaceList: Sets the search space to be used for cell-specific PDCCH monitoring by referring to up to 4 search space configurationssearchSpaceSIB1: Sets the search space for SIB1searchSpaceOtherSystemInformation: Sets the search space for SIB2 and other SIBspagingSearchSpace: Sets the search space for pagingra-SearchSpace: Sets the search space for random access procedure...,}

[0148] ControlResourceSet ::= SEQUENCE {controlResourceSetId : CORESET ID (use a value other than 0)frequencyDomainResources : Set frequency resources of CORESETduration : Set time domain length of CORESET (symbol)cce-REG-MappingType CHOICE { : Set CCE to REG mappinginterleaved SEQUENCE {reg-BundleSizeinterleaverSizeshiftIndex},nonInterleaved},precoderGranularitytci-StatesPDCCH-ToAddList : Indicates possible QCL relationships between QCL reference RS and PDCCH DMRStci-StatesPDCCH-ToReleaseListtci-PresentInDCI : Indicates presence of TCI field in DCI format 1_1pdcch-DMRS-ScramblingID : Indicates initial value of scrambling of PDCCH DMRS...,}

[0149] SearchSpace ::= SEQUENCE {searchSpaceId : Search space IDcontrolResourceSetId : CORESET ID associated with the search spacemonitoringSlotPeriodicityAndOffset CHOICE { : Period and offset of PDCCH monitoring slotsl1 : PDCCH monitoring performed in every slot... : (omitted) Monitoring offset value when PDCCH monitoring period is (2 slots ~ 1280 slots)sl2560 : Monitoring offset value when PDCCH monitoring period is 2560 slots}duration : Number of slots in which search space exists in every occasionmonitoringSymbolsWithinSlot : First symbol position to perform monitoring within a PDCCH monitoring slotnrofCandidates SEQUENCE {aggregationLevel1 : Number of PDCCH candidates when aggregation level is 1aggregationLevel2 : Number of PDCCH candidates when aggregation level is 2aggregationLevel4 : Number of PDCCH candidates when aggregation level is 4aggregationLevel8 : Number of PDCCH candidates when aggregation level is Number of PDCCH candidates in case of 8 aggregationLevel16: Number of PDCCH candidates in case of aggregation level 16}searchSpaceType CHOICE {: Indication of search space type (common or terminal-specific) and DCI format

[0150] common SEQUENCE {dci-Format0-0-AndFormat1-0 SEQUENCE {...}dci-Format2-0 SEQUENCE {nrofCandidates-SFI SEQUENCE {...},...}dci-Format2-1dci-Format2-2dci-Format2-3 SEQUENCE {dummy1dummy2}},ue-Specific SEQUENCE {dci-Formats...,}}}

[0151] The terminal may refer to the upper layer settings defined in Table 7 for UE-specific PDCCH monitoring.

[0152] PDCCH-Config ::= SEQUENCE {controlResourceSetToAddModList : Set up to 3 CORESETs by referring to CORESET settingscontrolResourceSetToReleaseListsearchSpacesToAddModList : Set up to 10 search spaces by referring to search space settingssearchSpacesToReleaseListdownlinkPreemption : Downlink preemption indicatortpc-PUSCH : Set up group TPC reception for PUSCH transmissiontpc-PUCCH : Set up group TPC reception for PUCCH transmissiontpc-SRS : Set up group TPC reception for SRS transmission...,}

[0153] The presence of an antenna port may mean that the channel experienced by a symbol transmitted through that antenna port can be inferred from the channel experienced by another symbol transmitted through the same antenna port.

[0154] Two different antenna ports are said to be quasi co-located (QCL) if the large-scale characteristics of the channel experienced by a symbol transmitted from one antenna port can be estimated or inferred from the channel experienced by a symbol transmitted from the other antenna port. The large-scale characteristics of the channel may mean one or more of 'delay spread', 'Doppler spread', 'Doppler shift', 'average gain', 'average delay', and 'spatial Rx parameters'.

[0155] When the time / frequency resources of a signal (QCL target RS) are insufficient to accurately measure the large-scale characteristics of a channel with that signal alone, information (e.g., QCL information) about another signal (e.g., QCL reference RS) that has large-scale characteristics that can be reused for reception of the signal (e.g., has sufficient time / frequency resources) can be provided to the terminal to improve the channel measurement performance of the terminal. In the case of an NR communication system, various QCL types can be supported as follows.

[0156] - QCL-Type A: Includes {Doppler shift, Doppler spread, mean delay, delay spread}.

[0157] - QCL-Type B: Includes {Doppler shift, Doppler spread}.

[0158] - QCL-Type C: Includes {Doppler shift, average delay}.

[0159] - QCL-Type D: Contains {spatial Rx parameters}.

[0160] FIG. 3 is a conceptual diagram illustrating embodiments of a QCL information transmission procedure through TCI (transmission configuration information) state setting and instruction in a communication system.

[0161] Referring to FIG. 3, the base station can set up to M TCI states for the UE through upper layer (e.g., RRC) signaling, according to the UE capability report and the maximum value defined in the standard (e.g., 4, 8, 64, 128, etc. depending on the frequency band) (S311). Each TCI state setting (320) can include information about a signal and / or channel (QCL reference (321)) that provides large-scale channel characteristics to a signal and / or channel (QCL target (322)) referencing the corresponding TCI. One TCI state setting (320) can include up to two QCL references (e.g., qcl-type1 and qcl-type2). The first QCL reference can be one of QCL-type A, QCL-type B, or QCL-type C. For example, qcl-type 1 ∈ {QCL-type A, QCL-type B, QCL-type C}. If a second QCL reference exists, the second QCL reference may be QCL-type D. For example, qcl-type 2 = QCL-type D.

[0162] Having the base station apply all TCIs configured via RRC signaling in real time can significantly increase the complexity of terminal implementation. Therefore, the base station can transmit activation messages for some of the TCIs configured via RRC signaling to the terminal via L2 signaling (e.g., MAC CE) (S312). The base station can activate up to N TCIs. N can be less than M. Each of N and M can be a natural number. The terminal can receive dynamic indications for the activated TCI(s).

[0163] The base station can dynamically indicate to the terminal some of the N activated TCIs via L1 signaling (e.g., DCI) (S313). After receiving the L1 signaling, the terminal can apply the QCL information indicated by the corresponding TCI at a predetermined timing and perform reception operations for the signal and / or channel.

[0164] In the TCI status indication step including the 'RRC signaling step (S311)' - 'MAC CE signaling step (S312)' - 'DCI signaling step (S313)' of FIG. 3, some steps may be omitted depending on the type of the QCL target RS (reference signal). "If the QCL target is a PDSCH DMRS and one or more TCI states are configured by RRC," the base station may use all steps of FIG. 3 to indicate the TCI state. "If the QCL target is a PDSCH DMRS and a single TCI state is configured by RRC," the MAC CE signaling step (S312) to the DCI signaling step (S313) may be omitted. If the QCL target is a PDCCH DMRS, the DCI signaling step (S313) may be omitted. The terminal may obtain configuration information about the TCI state and QCL information by referring to the RRC signaling defined in Table 8.

[0165] TCI-State ::= SEQUENCE { : TCI configuration (I.1-00) tci-StateId : TCI State ID qcl-Type1 : First QCL reference established by reference to QCL information qcl-Type2 : Second QCL reference established by reference to QCL information...} QCL-Info ::= SEQUENCE {cell : Cell index where QCL reference is sent bwp-Id : BWP index where QCL reference is sent referenceSignal CHOICE {csi-rs : CSI-RS index to reference if QCL reference is CSI-RS ssb : SSB index to reference if QCL reference is SSB},qcl-Type : QCL type to apply to the QCL target (one of QCL-Type A, QCL-Type B, QCL-Type C, or QCL-Type D)...}

[0166] The base station can instruct the terminal to activate or deactivate some of the TCI states set in RRC signaling via MAC CE signaling. Alternatively, the base station can instruct the QCL target RS to apply the TCI states indicated by the MAC CE. The base station can use the following MAC CE signaling depending on the type of QCL target RS.

[0167] - TCI state enable / disable MAC CE for UE-specific PDSCH DMRS

[0168] - TCI status indication MAC CE for UE-specific PDCCH DMRS

[0169] - TCI state enable / disable MAC CE for enhanced UE-specific PDSCH DMRS

[0170] FIG. 4 is a conceptual diagram illustrating embodiments of a TCI state activation / deactivation MAC CE structure in a communication system.

[0171] Referring to FIG. 4, in the TCI state enable / disable MAC CE for UE-specific PDSCH DMRS, the first octet (Oct 1) may include a COREST pool ID field, a serving cell ID field, and a BWP ID field, and the second octet (Oct 2) to the Nth octet (Oct N) may include a TCI state ID, T i It may contain fields for . The meaning of each field may be as follows. The size of each field may be variable.

[0172] - Serving Cell ID: Serving cell ID to which MAC CE applies.

[0173] - BWP ID: BWP ID to which MAC CE applies. The BWP ID can be linked to the BWP instruction field within the DCI to specify a bandwidth portion.

[0174] - T i : T i can indicate TCI state ID i. T set to 0 i may mean that the TCI state of TCI state ID i is disabled. T set to 1 i may mean that the TCI state with TCI state ID i is activated. The activated TCI states may be sequentially mapped to code points in the TCI instruction field in the DCI.

[0175] - CORESET Pool ID: If the DCI scheduling the PDSCH is monitored in a CORESET that does not have a coresetPoolIndex, the CORESET ID field can be ignored. If the DCI scheduling the PDSCH is monitored in a CORESET that has a coresetPoolIndex, T i The field's instructions can be applied when the 'value of CORESET pool ID' and the 'coresetPoolIndex value of CORESET' match.

[0176] FIG. 5 is a conceptual diagram illustrating embodiments of a TCI status indication MAC CE in a communication system.

[0177] Referring to FIG. 5, in a TCI status indication MAC CE for a UE-specific PDCCH DMRS, the first octet (Oct 1) may include a serving cell ID field and a CORESET ID field, and the second octet (Oct 2) may include a CORESET ID field and a TCI status ID field. The size of each field may be variable.

[0178] - Serving Cell ID: Serving cell ID to which MAC CE applies.

[0179] - CORESET ID: The CORESET ID can indicate the CORESET to which MAC CE applies. If the CORESET ID is set to 0, the CORESET set by controlResourceSetZero can indicate CORESET0.

[0180] - TCI State ID: TCI state ID indicated by MAC CE.

[0181] Figure 6 is a conceptual diagram illustrating examples of slot settings according to slot formats in a communication system.

[0182] Referring to FIG. 6, a slot (611) (e.g., a DL slot, a DL-only slot) may include only downlink symbols (621) depending on the slot format. A slot (612) (e.g., a UL slot, a UL-only slot) may include only uplink symbols (622) depending on the slot format. A slot (613) (e.g., a DL / UL-mixed slot) may include downlink symbols (623) and uplink symbols (624) depending on the slot format. A slot (613) may include a guard period. In other words, some symbols of a slot (613) may be set or indicated as a guard period (625) for downlink-uplink switching. A terminal may not perform communication in the guard period (625).

[0183] The base station can configure a "slot format" for one or more slots for each serving cell to the terminal via tdd-UL-DL-ConfigurationCommon. tdd-UL-DL-ConfigurationCommon may include at least one of the following information elements. Alternatively, tdd-UL-DL-ConfigurationCommon may reference at least one of the following information elements.

[0184] - referenceSubcarrierSpacing: reference numerology

[0185] - pattern1: first pattern

[0186] - pattern2: second pattern

[0187] pattern1 or pattern2 may contain at least one of the following settings:

[0188] - dl-UL-TransmissionPeriodicity: Period (P) of slot setting expressed in msec units.

[0189] - nrofDownlinkSlots: Number of slots containing only downlink symbols ( )

[0190] - nrofDownlinkSymbols: Number of downlink symbols ( )

[0191] - nrofUplinkSlots: Number of slots containing only uplink symbols ( )

[0192] - nrofUplinkSymbols: Number of uplink symbols ( )

[0193] The slot setting period (P msec) of the first pattern is It can contain a slot for a dog, and the numeral is It can be the first of S slots. The slots of S can only contain downlink symbols. The last of the S slots The slots of the dog can only contain uplink symbols. First Behind the slots of the dog The symbols of the dog can be downlink symbols. The last Before the dog slots The symbols of the dog may be uplink symbols. The remaining symbols that are not designated as downlink symbols or uplink symbols in the above pattern (e.g., Dog symbols) can be flexible symbols.

[0194] When the second pattern is set, the slot setting cycle of the second pattern is can be. In this case, one slot setting cycle is formed by the sum of the first pattern and the second pattern ( msec) is the first The second one with the dog slots The slots may include a number of slots. In the second pattern, the positions and numbers of downlink symbols, uplink symbols, and / or flexible symbols may be set based on the configuration information of the second pattern and the description of the first pattern. When the second pattern is set, the terminal We can assume (e.g., expect) that is a divisor of 20 msec.

[0195] The base station can configure tdd-UL-DL-ConfigurationDedicated for the terminal. The direction of flexible symbols among the symbols configured for the terminal by tdd-UL-DL-ConfigurationCommon can be overridden based on tdd-UL-DL-ConfigurationDedicated (e.g., the information elements below).

[0196] - slotSpecificConfigurationsToAddModList: A collection of slot configurations.

[0197] - slotIndex: Index of the slot included in the set of slot settings

[0198] - symbols: The direction of the slot indicated by slotIndex. If symbols = allDownlink, all symbols in the slot can be downlink symbols. If symbols = allUplink, all symbols in the slot can be uplink symbols. If symbols = explicit, nrofDownlinkSymbols can indicate the number of downlink symbols located at the beginning of the slot, and nrofUplinkSymbols can indicate the number of uplink symbols located at the end of the slot. If nrofDownlinkSymbols or nrofUplinkSymbols is omitted, nrofDownlinkSymbols or nrofUplinkSymbols can be considered to indicate 0, and the remaining symbols in the slot can be flexible symbols.

[0199] The base station can instruct the terminal on the slot format based on L1 signaling. When the terminal receives the SlotFormatIndicator from the base station, the terminal can obtain the configuration information for the SFI-RNTI (slot format indication-RNTI). When the terminal receives the dci-PayloadSize from the base station, the terminal can obtain the configuration information for the payload size of DCI format 2_0.

[0200] The terminal may additionally receive from the base station a PDCCH candidate, a CCE aggregation level, a search space set, etc. of the CORESET to monitor DCI format 2_0. Each SFI index field in the DCI format 2_0 may indicate a slot format to be applied to each slot in the slot set of DL BWP and / or UL BWP, starting from the slot in which the terminal receives (e.g., detects) the DCI format 2_0. The size of the slot set may be greater than or equal to the PDCCH monitoring period of the DCI format 2_0. When the slot set includes N slots, the DCI format 2_0 may include N SFI index fields. Each SFI index field may indicate a slot format shown in Tables 9 to 11 below. In Tables 9 to 11 below, D may denote a downlink symbol, U may denote an uplink symbol, and F may denote a flexible symbol.

[0201] Symbol number in a slot format slot slot)0123456789101112130DDDDDDDDDDDDDDDD1UUUUUUUUUUUU2FFFFFFFFFFFFFFFF3DDDDDDDDDDDDDDDF4DDDDDDDDDDDDFF5DDDDDDDDDDDDFFFF6DDDDDDDDDDFFFF7DDDDDDDDDDFFFFFF8FFFFFFFFFFFFFU9FFFFFFF FFFFFUU10FUUUUUUUUUUUU11FFUUUUUUUUUUU12FFFUUUUUUUUUU13FFFFUUUUUUUUUU14FFFFFUUUUU UUUU15FFFFFFFUUUUUUUU16DFFFFFFFFFFFFF17DDFFFFFFFFFFFF18DDDFFFFFFFFFFF19DFFFFFFFFFFFFU

[0202] Symbol number in a slot format slot slot)01234567891011121320DDFFFFFFFFFFFU21DDDFFFFFFFFFFU22DFFFFFFFFFFFUU23DDFFFFFFFFFFUU24DDDFFFFFFFFFUU25DFFFFFFFFFFFFUUU26DDFFFFFFFFFFFUUU27DDDFFFFFFFFFFUUU28DDDDDDDDDDDDFU29DD DDDDDDDDDFFU30DDDDDDDDDDFFFU31DDDDDDDDDDDDFUU32DDDDDDDDDDDFFUU33DDDDDDDDDDFFFUU34DFUUUUUU UUUUUU35DDFUUUUUUUUUUU36DDDFUUUUUUUUU37DFFUUUUUUUUUU38DDFFUUUUUUUUUU39DDDFFUUUUUUUUU

[0203] Slot Format Symbol number in a slot 01234567891011121340DFFFUUUUUUUUUU41DDFFFUUUUUUUUU42DDDFFFUUUUUUUUU43DDDDDDDDDFFFFU44DDDDDDFFFFFFUU45DDDDDDFFUUUUUU46DDDDDFUDDDDDFU47DDFUUUUDDFUUUU48DFUUUUUDFUUUUU49DDDDFFUDDDDFFU50DDFFUUUDDFFUUU51DFFUUUUDFFUUUU52DFFFFFUDFFFFFU53DDFFFFUDDFFFFU54FFFFFFFDDDDDDD55DDFFFUUUDDDDDD56 - 254Reserved 255UE is tdd-UL-DL-ConfigurationCommon, tdd-UL-DL-ConfigurationDedicated, and / or the slot format of the slot can be determined based on the DCI format.

[0204] FIG. 7 is a conceptual diagram illustrating embodiments of a method for allocating one or more operating modes within a resource interval.

[0205] Referring to FIG. 7, a base station may assign (e.g., instruct, configure) one or more operation modes to a terminal within a resource interval. The base station may assign operation mode A (710) for time, frequency, space, and / or code resources to the terminal. Operation mode A may be applied to all available resources without relying on configuration, activation, and / or indication. Operation mode A may be configured, activated, and / or indicated as a fallback mode or a default mode. Operation mode A may be promised to have the highest priority. Operation mode A may be a default mode that is configured, activated, and / or indicated to have the highest priority.

[0206] The base station may assign one or more additional operation modes (e.g., operation mode B (720) and / or operation mode C (730)) to a resource that overlaps with or does not overlap with a resource to which operation mode A is assigned (e.g., a resource to which operation mode A is applied). The base station may assign two or more different operation modes to a specific resource (740). Two or more different operation modes may be configured simultaneously by the base station on the same resource. The operation mode applied to a specific resource may be dynamically changed by MAC CE and / or DCI.

[0207] The type of operation mode can be classified according to the applied IAB DU / MT multiplexing mode (e.g., time domain multiplexing (TDM), frequency domain multiplexing (FDM), spatial domain multiplexing (SDM)). The type of operation mode can be classified according to the IAB FDM resource configuration (e.g., whether frequency domain HSNA (hard, soft, not-available) configuration is applied). The type of operation mode can be classified according to the frequency / time resource configuration for duplex improvement (e.g., flexible duplex mode including FDD, TDD, and SBFD (subband full duplex)) and / or FD (full duplex, in-band full-duplex)). For example, the operation mode can be an FDD mode, a TDD mode, or an SBFD mode.

[0208] The types of operation modes can be classified according to DL TX power control settings (e.g., whether the settings are applied). The types of operation modes can be classified according to restricted / desired DU (distributed unit) / MT (mobile terminal) beam settings (e.g., whether the settings are applied). The types of operation modes can be classified according to UL PSD (power spectral density) range settings (e.g., whether the settings are applied). The types of operation modes can be classified according to whether the slot to which the operation mode is applied is included in the slot list indicated by the IAB MA CE. Various applications of the above embodiments may be possible. For example, one operation mode may be composed of a combination of various classification conditions. The types of operation modes may not be limited to a specific embodiment.

[0209] FIG. 8 is a conceptual diagram illustrating embodiments of a method for allocating one or more operating modes within a resource interval.

[0210] Referring to FIG. 8, a base station and / or a terminal may operate in a TDD mode (810) during a specific time period (e.g., a specific time duration). The base station and / or the terminal may operate in an enhanced duplex mode (820) during another time period. The enhanced duplex mode may include XDD (e.g., a flexible duplex mode including FDD, TDD, and / or SBFD), FD, and / or other modes. For example, the enhanced duplex mode may be an SBFD mode. The enhanced duplex mode may not be limited to a specific form. The TDD operation mode (810) may be referred to as operation mode A, and the enhanced duplex mode (820) may be referred to as operation mode B. Operation mode B may be referred to as a full duplex (FD) communication mode. The base station may transmit configuration information of the operation mode A and / or configuration information of the operation mode B to the terminal via signaling. The terminal can receive configuration information of operation mode A and / or configuration information of operation mode B through signaling of the base station, and can identify a UL communication section, a DL communication section, an FL section, a guard section, a UL subband, a DL subband, an FL subband, and / or a guard band based on the configuration information.

[0211] A base station may allocate downlink slots and / or symbols for specific frequency resources (e.g., groups) within the same time interval to a terminal (e.g., a terminal group) to support an enhanced duplex mode. The base station may allocate uplink slots and / or symbols for other frequency resources (e.g., groups) within the same time interval to a terminal (e.g., a terminal group). Various operation modes may be semi-statically allocated for each resource based on higher layer signaling (e.g., F1AP, RRC, MAC CE, etc.). Alternatively, various operation modes may be dynamically allocated for each resource based on L2 signaling (e.g., MAC CE) and / or L1 signaling (e.g., DCI).

[0212] FIG. 9 is a conceptual diagram illustrating embodiments of a method for allocating one or more operating modes within a resource interval.

[0213] Referring to FIG. 9, the base station can perform IAB-DU operation(s) and / or IAB-MT operation(s) based on a TDM mode (910) in a specific time interval. The TDM mode (910) may be an operation mode A. The TDM mode (910) may be set by a time domain HSNA configuration. The base station can perform IAB-DU operation(s) and / or IAB-MT operation(s) based on a non-TDM mode (920) (e.g., an FDM mode or an SDM mode) in another time interval. The non-TDM mode (920) may be an operation mode B. The non-TDM mode (920) may be set by a frequency domain HSNA configuration (e.g., HSNA configuration information).

[0214] The operation modes can be classified into detailed operation modes according to other related functions. For example, a resource A allocated to a TDM mode can be associated with a Pc configured by a higher layer, and the TDM mode can be classified as operation mode A-1. The PDSCH EPRE (energy per resource element) in resource A can be derived by powerControlOffset. A resource B allocated by an FDM mode can be associated with a provided (or desired) DL Tx power adjustment MAC CE B, and the FDM mode can be classified as operation mode B-1. The PDSCH EPRE in resource B can be derived by considering the CSI-RS / PDSCH power ratio by powerControlOffset and the value indicated by MAC CE B. A resource C allocated by an FDM mode can be associated with a provided (or desired) DL Tx power adjustment MAC CE C, and the FDM mode can be classified as operation mode B-2. In resource B, the PDSCH EPRE can be derived by considering the CSI-RS / PDSCH power ratio by powerControlOffset and the value indicated by MAC CE C.

[0215] The various operation modes can be assigned semi-statically for each resource based on higher layer signaling (e.g., F1AP, RRC, MAC CE, etc.). Alternatively, the various operation modes can be assigned dynamically for each resource based on L2 signaling (e.g., MAC CE) and / or L1 signaling (e.g., DCI).

[0216] A base station can set (e.g., indicate) spatial relation information to a terminal through upper layer signaling to indicate uplink beam information. The spatial relation information can indicate that "a spatial domain filter value used for transmission and reception of a reference RS (reference signal) is applied to a spatial TX filter for transmission of a target RS (e.g., uplink transmission of a target RS having a spatial relation with the reference RS)." The reference RS for the spatial relation can be a downlink signal (e.g., SSB, CSI-RS) and / or an uplink signal (e.g., SRS).

[0217] If the reference RS is a downlink signal, the terminal can use the spatial RX filter value used to receive the reference RS as a spatial TX filter value for transmission of a target RS (e.g., a target RS having a spatial relationship with the reference RS). If the reference RS is an uplink signal, the terminal can use the spatial TX filter value used to transmit the reference RS as a spatial RX filter value for reception of a target RS (e.g., a target RS having a spatial relationship with the reference RS). The signaling structure for spatial relationship information may vary depending on the type of target RS.

[0218] If the target RS is SRS, the base station can set SRS resource-specific configuration information to the terminal through upper layer signaling (e.g., RRC signaling) as shown in Table 12 below. The terminal can receive SRS resource-specific configuration information from the base station.

[0219] SRS-SpatialRelationInfo ::= SEQUENCE {servingCellId : Serving cell index where reference RS is transmitted referenceSignalCHOICE {ssb-Index : SSB index if reference RS is SSB csi-RS-Index : CSI-RS resource index if reference RS is CSI-RS srs SEQUENCE {resourceId : SRS resource index if reference RS is SRS uplinkBWP : Index of UL BWP where SRS is transmitted if reference RS is SRS}}}

[0220] If the target RS is SRS, the base station can set SRS resource-specific configuration information to the terminal through upper layer signaling (e.g., RRC signaling) as shown in Table 13 below. The terminal can receive SRS resource-specific configuration information from the base station.

[0221] PUCCH-SpatialRelationInfo ::= SEQUENCE {pucch-SpatialRelationInfoId : Spatial relation info identifier for PUCCH servingCellId : Serving cell index where reference RS is transmitted referenceSignalCHOICE {ssb-Index : SSB index when reference RS is SSB csi-RS-Index : CSI-RS resource index when reference RS is CSI-RS srs : SRS resource specified by referring to PUCCH-SRS configuration}, pucch-PathlossReferenceRS-Id : RS resource index used for path loss measurement of PUCCH p0-PUCCH-Id : p0 configuration index for PUCCH power control closedLoopIndex : Setting value of closed loop power control} PUCCH-SRS ::= SEQUENCE {resource : SRS resource index uplinkBWP : Index of BWP where SRS is transmitted}

[0222] Figure 10 is a conceptual diagram illustrating embodiments of a SBFD setting method.

[0223] Referring to FIG. 10, in the SBFD mode, a TDD carrier (e.g., a carrier to which the TDD mode is applied) for the same slot (e.g., the same time interval, the same time duration) can be divided into a plurality of subbands, at least one subband among the plurality of subbands can be used for UL communication, and one or more subbands among the plurality of subbands can be used for DL ​​communication. The subband used for UL communication can be a UL subband. The subband used for DL ​​communication can be a DL subband. The UL subband and the DL subband can be configured within the same time interval. In this case, the UL communication and the DL communication can be performed simultaneously within the same time interval. According to the SBFD operation, the throughput of the UL communication and / or the DL communication can be improved. The SBFD operation can include UL communication in a UL subband and / or DL ​​communication in a DL subband.

[0224] A base station can transmit SBFD configurations (e.g., SBFD configuration information) for SBFD operation to a terminal via signaling. The terminal can receive the SBFD configurations from the base station. The SBFD configurations can be indicated to the terminal based on at least one of a semi-static scheme and a dynamic scheme. The terminal can receive the SBFD configurations from the base station. For example, the terminal can receive frequency indication signaling and / or time indication signaling from the base station in an RB set (1010) for a UL subband. The terminal can identify frequency resources (e.g., frequency bands) and / or time resources (e.g., time sections, time durations) corresponding to the UL subband (1020) based on the frequency indication signaling and / or time indication signaling, and can perform UL communication (e.g., UL transmission) in the identified resources (e.g., time and / or frequency resources).

[0225] A time interval (e.g., time duration) corresponding to a UL subband (1020) may be located in a DL slot and / or a FL (flexible) slot. The DL slot and / or the FL slot may be configured by a slot format setting. DL communication (e.g., DL transmission) may be performed in a DL slot. UL communication and / or DL ​​communication may be performed in an FL slot. In other words, a UL subband in a DL interval (e.g., a DL slot) and / or an FL interval (e.g., an FL slot) configured by a slot format setting may be configured based on an SBFD setting (e.g., an indication of an SBFD setting). In this case, DL communication and UL communication may be performed simultaneously in the DL interval. DL communication may be performed in a DL subband within the DL interval. UL communication may be performed in a UL subband within the DL interval. The DL subband and the UL subband may be multiplexed in the frequency domain.

[0226] The SBFD configuration information may include configuration information for a DL subband, an UL subband, an FL subband, and / or a guard band. The base station may transmit the SBFD configuration information to the terminal based on at least one of cell-specific signaling, UE-specific signaling, UE-dedicated signaling, or dynamic signaling (e.g., DCI). The terminal may receive the SBFD configuration information from the base station based on at least one of cell-specific signaling, UE-specific signaling, UE-dedicated signaling, or dynamic signaling. In other words, the SBFD configuration information may be cell-specific configuration information, UE-specific configuration information, UE-dedicated configuration information, and / or dynamic configuration information.

[0227] A terminal supporting SBFD (e.g., a terminal capable of recognizing SBFD) can determine a slot format (e.g., a UL slot, a DL slot, an FL slot) of a time interval based on a slot format setting, and can receive an SBFD setting applied to a carrier (e.g., a TDD carrier) for the time interval from the base station. A slot format indicated by the slot format setting in a specific time interval may be different from a slot format indicated by the SBFD setting (e.g., a slot format for a specific subband). In this case, the terminal can perform either UL communication or DL ​​communication in the specific time interval. Alternatively, if the terminal can perform UL communication and DL communication simultaneously, the terminal can perform UL communication and DL communication simultaneously in the specific time interval. Alternatively, even if the terminal supports simultaneous performance of UL communication and DL communication, the terminal can perform either UL communication or DL ​​communication in the specific time interval. An operation that performs UL communication and DL communication simultaneously may be a STR (simultaneous transmission and reception) operation.

[0228] FIG. 11a is a conceptual diagram illustrating embodiments of a single DCI-based mTRP (multi-transmission and reception point) communication method, and FIG. 11b is a conceptual diagram illustrating embodiments of a multi-DCI-based mTRP communication method.

[0229] Referring to FIGS. 11A and 11B , TRP #1 (1110) and TRP #2 (1120) may be connected via an ideal backhaul or a non-ideal backhaul. In an ideal backhaul, there may be no delay, while in a non-ideal backhaul, there may be delay. In the above situation, mTRP communication (e.g., mTRP operation) may be performed to improve DL data rate and / or frequency efficiency and ensure transmission security. mTRP communication may refer to transmission and reception operations using mTRP.

[0230] In the embodiment of FIG. 11A, single DCI-based mTRP communication can be performed. For example, the terminal (1130) can receive DCI #1 from one of a plurality of TRPs (e.g., TRP #1 and #2), and can receive PDSCHs (e.g., PDSCHs #1 and #2) from the plurality of TRPs based on DCI #1. In FIG. 11A, TRP #1 (1110) and TRP #2 (1120) can be connected via an ideal backhaul. Alternatively, in FIG. 11A, TRP #1 (1110) and TRP #2 (1120) can be connected via a non-ideal backhaul.

[0231] In a single DCI-based mTRP communication, a terminal (1130) can receive a PDSCH in each of TRP #1 and TRP #2. The terminal can receive a single DCI that schedules PDSCH transmission of the mTRP, and the single DCI can include multiple transmission configuration indicators (TCIs) considering the mTRP. The TCI included in the DCI (e.g., the TCI field) can indicate a quasi-co-location (QCL) type for each TRP. Antenna ports that perform transmission in a similar channel environment can have a QCL relationship. The TCI can indicate the type of QCL relationship between a DL reference signal and PDSCH DMRS port(s).

[0232] A TCI (e.g., a TCI field) included in one DCI may indicate two different TCI states (e.g., TCI state #1 and TCI state #2). TCI state #1 may indicate that the QCL type between DL reference signal #1 (e.g., CSI-RS #1) and PDSCH #1 (e.g., PDSCH DMRS #1) is QCL-typeD. TCI state #1 may indicate that two signals (e.g., two signals and / or channels) having QCL-typeD are transmitted in TRP #1. TCI state #2 may indicate that the QCL type between DL reference signal #2 (e.g., CSI-RS #2) and PDSCH #2 (e.g., PDSCH DMRS #2) is QCL-typeD. TCI state #2 may indicate that two signals (e.g., two signals and / or channels) having QCL-typeD are transmitted at TRP #2.

[0233] When one DCI indicates two TCI states, the first of the two TCI states may correspond to a code division multiplexing (CDM) group of the first antenna port for the first TRP (e.g., TRP #1), and the second of the two TCI states may correspond to a CDM group of the second antenna port for the second TRP (e.g., TRP #2).

[0234] When one DCI indicates two TCI states, the terminal (1130) can receive each PDSCH in the frequency resource associated with each TCI (e.g., each TCI state) based on FDM. The frequency resource associated with TCI state #1 may not overlap with the frequency resource associated with TCI state #2. In the embodiment of FIG. 11A, the terminal (1130) can receive PDSCH #1 corresponding to TB #1 from TRP #1 (1110) and PDSCH #2 corresponding to TB #2 from TRP #2 (1120). Alternatively, the terminal (1130) can receive each PDSCH corresponding to the same TB from each TRP based on FDM. For example, terminal (1130) can receive PDSCH #1 corresponding to TB from TRP #1 (1110) and can receive PDSCH #2 corresponding to TB from TRP #2 (1120). PDSCH #1 and #2 can correspond to the same TB.

[0235] Alternatively, the terminal (1130) may receive each PDSCH in the time resource associated with each TCI (e.g., each TCI state) based on TDM. The time resource associated with TCI state #1 may not overlap with the time resource associated with TCI state #2. The terminal (1130) may receive each PDSCH corresponding to the same TB from each TRP based on TDM. For example, the terminal (1130) may receive PDSCH #1 corresponding to the TB from TRP #1 (1110) and may receive PDSCH #2 corresponding to the TB from TRP #2 (1120). PDSCH #1 and #2 may correspond to the same TB. The terminal (1130) may receive each PDSCH corresponding to the same TB from each TRP (1110, 1120) through different PDSCH occasions. In other words, the terminal (1130) can receive PDSCH #1 corresponding to TB from TRP #1 (1110) through PDSCH occasion #1, and can receive PDSCH #2 corresponding to TB from TRP #2 (1120) through PDSCH occasion #2. PDSCH occasions #1 and #2 may be different PDSCH occasions.

[0236] In a single DCI-based mTRP communication, a terminal (1130) can receive one DCI from one of the mTRPs, and can receive a PDSCH from each mTRP based on information element(s) included in one DCI.

[0237] In the embodiment of FIG. 11B, the terminal (1130) can perform multi-DCI-based mTRP communication. The terminal (1130) can receive DCI from each of the mTRPs (1110, 1120), and can receive PDSCH from each of the mTRPs (1110, 1120) based on each DCI. For example, the terminal (1130) can receive DCI #1 from TRP #1 (1110), and can receive PDSCH #1 from TRP #1 (1110) based on DCI #1. The terminal (1130) can receive DCI #2 from TRP #2 (1120), and can receive PDSCH #2 from TRP #2 (1120) based on DCI #2.

[0238] The terminal (1130) can detect DCI #1 transmitted by TRP #1 (1110) within a CORESET set to CORESET group ID 0. The terminal (1130) can detect DCI #2 transmitted by TRP #2 (1120) within a CORESET set to CORESET group ID 1. A TCI state (e.g., a PDCCH TCI state) representing each TRP can be assigned (e.g., set) for each CORESET group. For example, the TCI state of TRP #1 can be different from the TCI state of TRP #2. The terminal (1130) can receive each DCI from each TRP. The terminal (1130) can receive a PDSCH having a PDSCH scrambling ID (e.g., the same PDSCH scrambling ID or different PDSCH scrambling IDs) based on two PDCCH schedulings (e.g., two DCIs) in time and frequency resources (e.g., fully or partially overlapping time and frequency resources). A delay may exist due to non-ideal backhaul between the mTRPs (1110, 1120). The terminal (1130) can receive a DCI in each of the mTRPs (1110, 1120), and can receive a PDSCH in each of the mTRPs (1110, 1120) based on the DCI.

[0239] PDSCH transmission based on mTRP communication (e.g., mTRP communication based on multiple DCIs) can be extended to inter-cell operation (e.g., inter-cell mTRP communication). The terminal (1130) can operate based on a synchronization signal block (SSB) associated with a different PCI than the physical cell identifier (PCI) of the serving cell. Multiple PCIs (e.g., different PCIs) can be configured (e.g., indicated) to the terminal (1130), and one PCI can be activated for inter-cell mTRP communication. Additional PCIs can be associated with one or more TCIs. The base station can dynamically indicate the TCI for each TRP using DCI.

[0240] PDCCH transmission, PUSCH transmission, and / or PUCCH transmission based on mTRP may be considered. Repeated PDCCH transmission may be performed through multiple search space sets (SSSs) having association (e.g., explicit association). Each SSS (e.g., associated SSSs) may correspond to each CORESET having different TCIs. Based on the above configuration, beam diversity may be secured. In PDCCH repetition (e.g., PDCCH repeated transmission), at least one of the aggregation level, coded bits, DCI payload, or grant may be set identically. The terminal (1130) may monitor the PDCCH by considering the number of PDCCH repetitions.

[0241] Repeated mTRP PUCCH transmissions may be supported. For example, TRP #1 (1110) and TRP #2 (1120) may each transmit the same DCI. In other words, the same DCI may be repeatedly transmitted in mTRPs (1110, 1120). Repeated mTRP PUCCH transmissions may be applied to intra-slots and / or inter-slots. Repeated single TRP PUCCH transmissions may be supported. For example, a single TRP may repeatedly transmit the same DCI. Repeated single TRP PUCCH transmissions and repeated mTRP PUCCH transmissions may be dynamically switched. Switching between repeated single TRP PUCCH transmissions and repeated mTRP PUCCH transmissions may be indicated by DCI.

[0242] Repeated mTRP PUSCH transmissions may be supported. Codebook-based or non-codebook-based mTRP PUSCH transmissions may be supported. In repeated mTRP PUSCH transmissions, the number of SRS resource sets may be up to two. Repeated single TRP PUSCH transmissions may be supported. Repeated single TRP PUSCH transmissions and repeated mTRP PUSCH transmissions may be dynamically switched. Switching between repeated single TRP PUSCH transmissions and repeated mTRP PUSCH transmissions may be indicated by DCI.

[0243] Fig. 12 is a conceptual diagram illustrating embodiments of SBFD operation based on mTRP, and Fig. 13 is a conceptual diagram illustrating embodiments of resource allocation by mTRP.

[0244] Referring to FIGS. 12 and 13, the terminal (1230) can receive PDSCH from mTRPs (1210, 1220). TRP #1 (1210) and TRP #2 (1220) can be connected via a non-ideal backhaul. Delay may exist in the non-ideal backhaul. The terminal (1230) can receive DCI #1 from TRP #1 (1210) and DCI #2 from TRP #2 (1220). In other words, the terminal (1230) can receive control information (e.g., DCI) for each TRP by monitoring the CORESET group associated with each TRP. The DCI can include at least one of time resource information, frequency resource information, and spatial resource information. The terminal (1230) can identify time resources, frequency resources, and / or spatial resources based on information element(s) included in the DCI.

[0245] The resources (e.g., time, frequency, and / or spatial resources) indicated by TRP #1 (1210) may not be aligned with the resources indicated by TRP #2 (1220). "Resources are not aligned" may mean "different transmission directions (e.g., UL, DL, FL) are indicated for the same resource." The operating mode (e.g., TDD mode, FDD mode, and / or SBFD mode) indicated by TRP #1 (1210) may not be aligned with the operating mode indicated by TRP #2 (1220). For example, TRP #1 (1210) may indicate TDD mode, and TRP #2 (1220) may indicate SBFD mode.

[0246] A terminal (1230) may be connected to two TRPs (1210, 1220) and may receive DCI for each of the two TRPs (1210, 1220) by monitoring two or more CORESET groups. DCI #1 transmitted by TRP #1 (1210) may schedule one or more PDSCH transmissions. DCI #2 transmitted by TRP #2 (1220) may include SBFD configuration information (e.g., resource allocation information for SBFD operation and / or activation indication of SBFD operation). The resource allocation information for SBFD operation may indicate resource allocation in a time interval that completely or partially overlaps with the time interval indicated by DCI #1 (e.g., the same time duration).

[0247] DCI #1 and DCI #2 may be applied to the same time interval. The time interval to which DCI #1 is applied may completely or partially overlap with the time interval to which DCI #2 is applied. In the same time interval to which DCI #1 and DCI #2 are applied, DCI #1 may indicate that "the terminal (1230) receives a PDSCH in each of the TRPs (1210, 1220)", and DCI #2 may indicate that "the terminal (1230) performs UL communication and DL communication simultaneously based on the SBFD operation." In other words, a misalignment problem may occur due to DCI #1 and DCI #2.

[0248] In the embodiment of FIG. 13, the terminal (1230) can receive PDSCH from each of the TRPs (1210, 1220) based on the DCI received from each of the TRPs (1210, 1220). Based on the scheduling information included in the DCI of each TRP (1210, 1220), TRP #1 (1210) can schedule mTRP-based PDSCH transmissions in a specific time interval, and TRP #2 (1220) can schedule UL communication and DL communication according to SBFD operation in a specific time interval. In this case, since a misalignment problem occurs between the operation indicated by TRP #1 (1210) and the operation indicated by TRP #2 (1220), communication may not be performed smoothly. In a situation where a misalignment problem occurs due to multiple DCIs in a situation where a terminal receives each DCI from each TRP in mTRP communication, a method for interpreting the multiple DCIs and / or a method for operating the terminal based on the interpretation may be required.

[0249] Figure 14 is a conceptual diagram illustrating a non-alignment situation between single DCI-based mTRP operation and SBFD operation.

[0250] Referring to FIG. 14, the terminal (1430) can perform a single DCI-based mTRP operation (e.g., a single DCI-based mTRP communication). The terminal (1430) can receive DCI #1 (e.g., DCI #1 indicating a single DCI-based mTRP operation) from TRP #1 (1410), and can receive PDSCHs from each of TRP #1 (1410) and TRP #2 (1420) based on DCI #1. In other words, the terminal (1430) can receive PDSCH #1 from TRP #1 (1410) based on DCI #1, and can receive PDSCH #2 from TRP #2 (1420) based on DCI #1.

[0251] The terminal (1430) can receive SBFD configuration (e.g., configuration indicating SBFD operation) through signaling independent of DCI #1. The SBFD configuration (e.g., SBFD configuration information) can be indicated by at least one of RRC signaling, MAC signaling, or PHY signaling. A misalignment issue may occur in a specific time interval due to the SBFD configuration and DCI #1 (e.g., DCI #1 indicating mTRP communication based on a single DCI).

[0252] Figure 15 is a conceptual diagram illustrating a non-alignment situation between a single DCI-based mTRP operation and an SBFD operation.

[0253] Referring to FIG. 15, a terminal (1530) can receive DCI for mTRP communication based on a single DCI, and can receive a PDSCH based on scheduling information included in the DCI. A base station (e.g., a network) can allocate downlink resources (e.g., downlink slots) to each of TRP #1 (1510) and TRP #2 (1520) in a specific time interval based on the single DCI. The terminal (1530) can receive a PDSCH in each of TRP #1 (1510) and TRP #2 (1520). A setting instructing the terminal (1530) to perform an SBFD operation may exist. The setting instructing the SBFD operation may be an SBFD setting. The SBFD setting may be indicated by at least one of RRC signaling (e.g., an RRC message), MAC signaling (e.g., MAC CE), or PHY signaling (e.g., DCI).

[0254] The SBFD configuration may indicate the configuration of the UL subband and / or DL ​​subband in a specific time interval (e.g., a specific time duration). For example, the SBFD configuration may indicate the UL subband configuration in a time interval in which the PDSCH of TRP #1 (1510) and / or TRP #2 (1520) is received. The terminal (1530) may receive the DCI and SBFD configuration for mTRP communication based on a single DCI. The SBFD configuration may be received through signaling independent of the DCI. The operation indicated by the DCI in the same time interval may differ from the operation indicated by the SBFD configuration. In this case, a misalignment problem may occur.

[0255] Meanwhile, mTRP communication configuration and / or SBFD configuration can be indicated to the terminal by various signaling methods. mTRP communication configuration and / or SBFD configuration can be indicated to the terminal by various forms. The signaling method and / or the form can be based on at least one method defined in Table 14 below. Based on at least one method defined in Table 14, configuration information for mTRP communication (e.g., single DCI-based mTRP communication or multi-DCI-based mTRP communication) and / or SBFD configuration information can be indicated to the terminal. If an operation indicated by mTRP configuration information (e.g., configuration information for mTRP communication) is different from an operation indicated by SBFD configuration information in the same time interval, a misalignment problem may occur.

[0256] - The terminal can receive a DCI including a configuration for mTRP communication based on a single DCI and a DCI including an SBFD configuration. - The terminal can receive upper layer signaling (e.g., an RRC message and / or MAC CE) including a configuration for mTRP communication (e.g., an mTRP communication based on a single DCI) and upper layer signaling (e.g., an RRC message and / or MAC CE) including an SBFD configuration. - The terminal can receive a DCI including a configuration for mTRP communication based on a single DCI and upper layer signaling (e.g., an RRC message and / or MAC CE) including an SBFD configuration. - The terminal can receive a DCI including a configuration for mTRP communication based on a single DCI and upper layer signaling (e.g., an RRC message and / or MAC CE) including an SBFD configuration. - The terminal can receive a plurality of DCIs (e.g., two DCIs) including a configuration for mTRP communication based on multiple DCIs and a DCI including an SBFD configuration. Can be received. - The terminal can receive a plurality of DCIs (e.g., two DCIs) including configurations for multi-DCI based mTRP communication and upper layer signaling (e.g., RRC message and / or MAC CE) including SBFD configurations. - The terminal can receive upper layer signaling (e.g., RRC message and / or MAC CE) including configurations for mTRP communication (e.g., multi-DCI based mTRP communication) and upper layer signaling (e.g., RRC message and / or MAC CE) including SBFD configurations. - The terminal can receive upper layer signaling (e.g., RRC message and / or MAC CE) including configurations for mTRP communication (e.g., multi-DCI based mTRP communication) and DCI including SBFD configurations.

[0257] In Table 14, the mTRP configuration included in the upper layer signaling may mean a configured grant (CG) configuration and / or a semi-persistent scheduling (SPS) configuration. Different misalignment resolution methods (e.g., different collision resolution methods) may be applied depending on each case in Table 14. A collision may mean a misalignment problem. A case where the configuration of the first DCI and the configuration of the second DCI collide may be considered. If a collision (e.g., a misalignment problem) occurs in a time interval due to configurations indicated by multiple DCIs (e.g., a DCI for mTRP communication and a DCI for SBFD configuration), the terminal may determine which of the multiple DCIs to operate on. For example, the terminal may operate on the basis of the indication (e.g., configuration) of the most recently received DCI among the multiple DCIs. In other words, the terminal can compare the reception times of multiple DCIs and operate in a time interval (e.g., a time interval where a collision or misalignment problem occurs) based on the instructions of the most recently received DCI among the multiple DCIs.

[0258] Embodiments of the present disclosure may be applied to "a case where a configuration of a first signaling (e.g., an RRC message, a MAC CE, a DCI) is a configuration of a first operation, and a configuration of a second signaling (e.g., an RRC message, a MAC CE, a DCI) is a configuration of a second operation." Each of the first operation and the second operation may be a UL operation, a DL operation, or a SBFD operation. Embodiments of the present disclosure (e.g., a method for solving a misalignment problem) may be applied to "a case where a first UL configuration and a second UL configuration collide," "a case where a first DL configuration and a second DL configuration collide," "a case where a first SBFD configuration and a second SBFD configuration collide," "a case where a UL configuration and a DL configuration collide," "a case where a UL configuration and an SBFD configuration collide," and / or "a case where a DL configuration and an SBFD configuration collide."

[0259] A case where the configuration of higher layer signaling (e.g., RRC message and / or MAC CE) and the configuration of DCI conflict may be considered. A terminal may receive higher layer signaling and DCI. The higher layer signaling may include mTRP configuration information (or SBFD configuration information), and the DCI may include SBFD configuration information. Alternatively, the higher layer signaling may include SBFD configuration information, and the DCI may include mTRP configuration information (or SBFD configuration information). In a specific time interval, the higher layer signaling and the DCI may indicate different operations (e.g., UL communication and / or DL ​​communication). In this case, a conflict (e.g., a misalignment issue) may occur in a specific time interval.

[0260] The priorities for higher layer signaling (e.g., configuration by higher layer signaling) and DCI (e.g., configuration by DCI) can be set in the terminal. The terminal can compare the priorities of the higher layer signaling and the priorities of the DCI and select the configuration with the higher priority. DCI can mean dynamic signaling. If the priority of the dynamic signaling (e.g., DCI) is higher than the priority of the higher layer signaling, the terminal can operate based on the configuration (e.g., indication) of the dynamic signaling in a specific time interval in which a collision occurs. If the priority of the higher layer signaling is higher than the priority of the dynamic signaling (e.g., DCI), the terminal can operate based on the configuration (e.g., indication) of the higher layer signaling in a specific time interval in which a collision occurs. The priorities can be set by type of signaling message (e.g., RRC message, MAC CE, DCI). The priorities can be set as "DCI > MAC CE > RRC message". In other words, DCI can have the highest priority, and RRC messages can have the lowest priority. Alternatively, the priorities can be set as "DCI < MAC CE < RRC message." In other words, DCI can have the lowest priority, and RRC messages can have the highest priority.

[0261] mTRP configuration information (e.g., mTRP communication configuration) can be indicated by the first higher layer signaling, and SBFD configuration can be indicated by the second higher layer signaling. Since the configuration by the higher layer signaling (e.g., RRC configuration) is controlled by the base station (e.g., network), the base station can set the mTRP communication configuration and SBFD configuration respectively so that the mTRP communication configuration and SBFD configuration do not collide. The base station (e.g., network) can recognize in advance the configuration that causes a collision in a specific time interval. When the mTRP communication configuration and SBFD configuration are indicated by the higher layer signaling, the mTRP communication configuration and SBFD configuration can be indicated so that they do not collide with each other. Therefore, when the mTRP communication configuration and SBFD configuration are indicated by the higher layer signaling, a collision between the mTRP communication configuration and the SBFD configuration may not occur.

[0262] Figure 16 is a flowchart illustrating the operation of a terminal in a non-aligned situation.

[0263] Referring to FIG. 16, multi-DCI-based mTRP communication can be performed. The terminal can receive DCI from each TRP (S1610). For example, the terminal can receive DCI #1 from TRP #1 and DCI #2 from TRP #2. DCI #1 and DCI #2 can include different information elements. In other words, DCI #1 and DCI #2 may not be the same DCI. The terminal can check resource allocation information and / or operation mode information based on each DCI received from each TRP (S1620). For example, the terminal can check time resource information, frequency resource information, and / or spatial resource information based on the information element(s) included in the DCI. The terminal can check the duplex mode (e.g., TDD mode, FDD mode, SBFD mode) based on the information element(s) included in the DCI.

[0264] The terminal can determine whether the SBFD mode is applied (e.g., allocated, indicated, set) in a first time interval (e.g., a specific time interval) based on information element(s) included in the DCI (S1630). One of DCIs #1 and DCI #2 can indicate that the SBFD mode is applied in the first time interval. In other words, one DCI can indicate an SBFD operation in the first time interval. One DCI can include an SBFD setting. The SBFD setting can indicate that a first subband among frequency bands for the first time interval is set as a UL subband or a DL subband. The time interval (e.g., the first time interval) can be set for a TDD operation and / or an unpaired spectrum operation.

[0265] The first time interval can be set as a DL communication interval or an UL communication interval by upper layer signaling of the base station. DL communication can be performed in the DL communication interval, and the DL communication interval can include one or more DL slots. UL communication can be performed in the UL communication interval, and the UL communication interval can include one or more UL slots. The SBFD operation can be an operation of performing UL communication and DL communication simultaneously in the same time interval. The SBFD configuration can include configuring a UL subband in which UL communication is performed within the DL communication interval and / or configuring a DL subband in which DL communication is performed within the UL communication interval.

[0266] If the SBFD mode is applied in the first time interval, the terminal can perform the SBFD operation without performing the multi-DCI-based mTRP operation in the first time interval (S1640). In other words, the terminal can perform the SBFD operation based on a DCI (e.g., a DCI including an SBFD configuration) that indicates the SBFD operation among the plurality of DCIs. In this case, the terminal can ignore the remaining DCIs except for the DCI that indicates the SBFD operation among the plurality of DCIs. On the other hand, if none of the plurality of DCIs indicates the SBFD operation, the terminal can perform the multi-DCI-based mTRP operation in the first time interval (S1650).

[0267] "When an mTRP operation and an SBFD operation are applied (e.g., indicated) in a first time interval" may mean "when a collision (e.g., a misalignment problem) occurs in the first time interval." "When the first time interval is a DL communication interval, an mTRP operation (e.g., a multi-DCI-based mTRP operation) is a DL communication, and an SBFD operation includes a UL communication," the DL communication (e.g., the mTRP operation) may collide with the UL communication (e.g., the SBFD operation) in the first time interval. Or, "When the first time interval is a UL communication interval, an mTRP operation (e.g., a multi-DCI-based mTRP operation) is a UL communication, and an SBFD operation includes a DL communication," the UL communication (e.g., the mTRP operation) may collide with the DL communication (e.g., the SBFD operation) in the first time interval.

[0268] The embodiment of Fig. 16 can be performed as shown in Fig. 17 below.

[0269] Figure 17 is a conceptual diagram illustrating the operation of a terminal in a non-aligned situation.

[0270] Referring to FIG. 17, TRP #1 (1710) may transmit DCI #1. DCI #1 may indicate mTRP-based PDSCH transmissions in a first time interval (e.g., a first time duration). TRP #2 (1720) may transmit DCI #2. DCI #2 may indicate SBFD operation in the first time interval. DCI #2 may include an SBFD configuration, and the SBFD configuration may indicate (e.g., allocate) a UL subband in the first time interval. DCI #2 may indicate that UL communication is performed in a UL subband in the first time interval. DCI #2 may indicate that DL communication is performed in a subband other than the UL subband in the first time interval (e.g., a DL subband). In other words, DCI #2 may schedule UL communication and DL communication in the first time interval. "If the configuration by DCI #1 and the configuration by DCI #2 conflict" and / or "if one of DCIs #1 and DCI #2 indicates the SBFD operation", the terminal may perform the SBFD operation in the first time interval based on the DCI indicating the SBFD operation (e.g., DCI #2 of TRP #2 (1720)). The terminal may ignore the DCI #1 (e.g., the indication of DCI #1) received from TRP #1 (1710).

[0271] The time interval (e.g., the first time interval) can be configured for TDD operation and / or unpaired spectrum operation. The above embodiments can be applied not only to SBFD operation but also to XDD operation including full duplex operation and / or IAB DU / MT simultaneous operation.

[0272] Figure 18 is a flowchart illustrating the operation of a terminal in a non-aligned situation.

[0273] Referring to FIG. 18, multi-DCI-based mTRP communication can be performed. The terminal can receive DCI from each TRP (S1810). For example, the terminal can receive DCI #1 from TRP #1 and DCI #2 from TRP #2. DCI #1 and DCI #2 can include different information elements. In other words, DCI #1 and DCI #2 may not be the same DCI. The terminal can check resource allocation information and / or operation mode information based on each DCI received from each TRP (S1820). For example, the terminal can check time resource information, frequency resource information, and / or spatial resource information based on the information element(s) included in the DCI. The terminal can check the duplex mode (e.g., TDD mode, FDD mode, SBFD mode) based on the information element(s) included in the DCI.

[0274] The terminal can determine whether the SBFD mode is applied (e.g., allocated, indicated, set) in a first time interval (e.g., a specific time interval) based on information element(s) included in the DCI (S1830). One of DCIs #1 and DCI #2 can indicate that the SBFD mode is applied in the first time interval. In other words, one DCI can indicate an SBFD operation in the first time interval. One DCI can include an SBFD setting. The SBFD setting can indicate that a first subband among the frequency bands for the first time interval is set as a UL subband or a DL subband. The time interval (e.g., the first time interval) can be set for a TDD operation and / or an unpaired spectrum operation.

[0275] The first time interval can be set as a DL communication interval or an UL communication interval by upper layer signaling of the base station. DL communication can be performed in the DL communication interval, and the DL communication interval can include one or more DL slots. UL communication can be performed in the UL communication interval, and the UL communication interval can include one or more UL slots. The SBFD operation can be an operation of performing UL communication and DL communication simultaneously in the same time interval. The SBFD configuration can include configuring a UL subband in which UL communication is performed within the DL communication interval and / or configuring a DL subband in which DL communication is performed within the UL communication interval.

[0276] If the mTRP operation and the SBFD operation are applied (e.g., instructed) in the first time interval, the terminal may perform the SBFD operation with priority over the multi-DCI-based mTRP operation in the first time interval (S1840). The priority of the multi-DCI-based mTRP operation and the priority of the SBFD operation may be set in the terminal. The terminal may compare the priority of DCI #1 (e.g., the multi-DCI-based mTRP operation) with the priority of DCI #2 (e.g., the SBFD operation). If the priority of the SBFD operation is higher than the priority of the multi-DCI-based mTRP operation, the terminal may perform the SBFD operation with priority. In other words, if the SBFD operation and another operation (e.g., the multi-DCI-based mTRP operation) collide in the first time interval, the terminal may perform the SBFD operation with priority. On the other hand, if none of the plurality of DCIs instructs the SBFD operation, the terminal may perform the multi-DCI-based mTRP operation in the first time interval (S1850).

[0277] "When the SBFD mode is applied in the first time interval" may mean "when a collision (e.g., a non-alignment issue) occurs in the first time interval." "When the first time interval is a DL communication interval, and an mTRP operation (e.g., a multi-DCI based mTRP operation) is a DL communication, and an SBFD operation includes a UL communication," the DL communication (e.g., the mTRP operation) may collide with the UL communication (e.g., the SBFD operation) in the first time interval. Or, "When the first time interval is a UL communication interval, and an mTRP operation (e.g., a multi-DCI based mTRP operation) is a UL communication, and an SBFD operation includes a DL communication," the UL communication (e.g., the mTRP operation) may collide with the DL communication (e.g., the SBFD operation) in the first time interval.

[0278] The embodiment of Fig. 18 can be performed as shown in Fig. 19 below.

[0279] Figure 19 is a conceptual diagram illustrating the operation of a terminal in a non-aligned situation.

[0280] Referring to FIG. 19, TRP #1 (1910) may transmit DCI #1. DCI #1 may indicate PDSCH repeated transmission. The embodiment of FIG. 19 may be applied not only to PDSCH repeated transmission but also to PDCCH repeated transmission, PUCCH repeated transmission, and / or PUSCH repeated transmission. TRP #1 (1910) may transmit (e.g., transmit repeatedly) PDSCH in a resource for which PDSCH repeated transmission is configured. TRP #2 (1720) may transmit DCI #2. DCI #2 may indicate SBFD operation in a first time interval (e.g., a first time duration). DCI #2 may include an SBFD configuration, and the SBFD configuration may indicate (e.g., allocate) a UL subband within the first time interval. DCI #2 may indicate that UL communication is performed in a UL subband within the first time interval. DCI #2 may indicate that DL communication is performed on a subband other than the UL subband (e.g., a DL subband) within the first time interval. In other words, DCI #2 may schedule UL communication and DL communication in the first time interval. The time interval (e.g., the first time interval) may be configured for TDD operation and / or unpaired spectrum operation.

[0281] In other time intervals except for the first time interval, the PDSCH repeated transmission indicated by DCI #1 and the SBFD operation indicated by DCI #2 may not collide. Therefore, PDSCH repeated transmission can be performed in other time intervals except for the first time interval. In the first time interval, the PDSCH repeated transmission indicated by DCI #1 and the SBFD operation indicated by DCI #2 may collide. Therefore, PDSCH repeated transmission may not be performed in the first time interval. In other words, the terminal can interpret that the SBFD operation has priority over other operations (e.g., PDSCH repeated transmission) while performing an operation based on the DCI received in each of the TRPs. Based on the above interpretation, the terminal can perform the SBFD operation with priority without performing other operations (e.g., PDSCH repeated transmission) in a specific time interval (e.g., a specific time interval in which a collision occurs), and can perform other operations (e.g., PDSCH repeated transmission) in a time interval in which no collision occurs.

[0282] The above embodiments can be applied not only to SBFD operation but also to XDD operation including full duplex operation and / or IAB DU / MT simultaneous operation.

[0283] In the event of a misalignment issue (e.g., collision), the UE may operate based on the CORESET with the lower CORESET ID. Adjacent TRPs may have a higher probability of supporting the same duplex mode. Considering the above, the UE may be configured to operate based on the indication of a specific DCI among multiple DCIs received from the TRPs. The UE may receive DCI #1 indicating SBFD operation in the CORESET with CORESET group ID 0 (e.g., CORESET ID 0), and may receive DCI #2 indicating another operation (e.g., multi-DCI-based mTRP operation, PDSCH repeated transmission) in the CORESET with CORESET group ID 1 (e.g., CORESET ID 1). In this case, the terminal may perform the SBFD operation based on the DCI received from CORESET group ID 0 (e.g., CORESET ID 0), which is the lower CORESET group ID (e.g., the lower CORESET ID) among CORESET group IDs 0 and 1 (e.g., CORESET ID 0 and 1). The terminal may ignore DCI #2, which indicates a different operation. DCI #1 may be received from TRP #1, and DCI #2 may be received from TRP #2.

[0284] Alternatively, the UE may receive DCI #1 indicating another operation (e.g., multi-DCI based mTRP operation, PDSCH repeated transmission) in a CORESET having CORESET group ID 0 (e.g., CORESET ID 0), and may receive DCI #2 indicating SBFD operation in a CORESET having CORESET group ID 1 (e.g., CORESET ID 1). In this case, the UE may perform the other operation based on the DCI received in CORESET group ID 0 (e.g., CORESET ID 0), which is the lower CORESET group ID (e.g., the lower CORESET ID) among CORESET group IDs 0 and 1 (e.g., CORESET IDs 0 and 1). The UE may ignore DCI #2 indicating SBFD operation. In other words, the UE may operate based on the DCI corresponding to the CORESET having the lower CORESET group ID (e.g., the lower CORESET ID). Contrary to the above embodiment, the terminal may operate based on the DCI corresponding to the CORESET having a high CORESET group ID (e.g., high CORESET ID).

[0285] The above embodiments (e.g., the embodiments of FIGS. 10 to 19) may be applied not only to PDSCH transmission and reception operations, but also to transmission and reception operations of other downlink signals / channels (e.g., PDCCH, CSI-RS) and / or transmission and reception operations of other uplink signals / channels (e.g., PUSCH, PUCCH, SRS, RACH (random access channel)). "DCI for PDSCH allocation" may be replaced with "DCI for PUSCH allocation", "DCI for PUCCH allocation", "DCI for CSI-RS request", and / or "DCI for SRS request" depending on the embodiment. “Higher layer signaling for PDSCH allocation (e.g., RRC message and / or MAC CE)” may be replaced with “higher layer signaling for PUSCH allocation”, “higher layer signaling for PUCCH allocation”, “higher layer signaling for CSI-RS configuration”, and / or “higher layer signaling for SRS configuration” depending on the embodiment.

[0286] According to the above embodiments, when an SBFD operation and another operation (e.g., an mTRP operation) collide during a specific time interval, the terminal may select one operation based on priority and perform the selected operation. The base station may expect (e.g., estimate) that the terminal will perform the operation selected based on priority.

[0287] The operations of the method according to the embodiments of the present disclosure can be implemented as a computer-readable program or code on a computer-readable recording medium. A computer-readable recording medium includes any type of recording device that stores information readable by a computer system. Furthermore, a computer-readable recording medium can be distributed across network-connected computer systems, allowing the computer-readable program or code to be stored and executed in a distributed manner.

[0288] Additionally, the computer-readable recording medium may include hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, etc. The program instructions may include not only machine language codes produced by a compiler, but also high-level language codes that can be executed by a computer using an interpreter, etc.

[0289] While some aspects of the present disclosure have been described in the context of a device, they may also represent a description of a corresponding method, wherein a block or device corresponds to a method step or a feature of a method step. Similarly, aspects described in the context of a method may also be described as a corresponding block or item or a feature of a corresponding device. Some or all of the method steps may be performed by (or using) a hardware device, such as, for example, a microprocessor, a programmable computer, or an electronic circuit. In some embodiments, at least one or more of the most significant method steps may be performed by such a device.

[0290] In embodiments, a programmable logic device (e.g., a field-programmable gate array) may be used to perform some or all of the functions of the methods described herein. In embodiments, the field-programmable gate array may operate in conjunction with a microprocessor to perform one of the methods described herein. In general, the methods are preferably performed by some hardware device.

[0291] Although the present disclosure has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various modifications and changes may be made to the present disclosure without departing from the spirit and scope of the present disclosure as set forth in the claims below.

Claims

1. As a terminal method, A step of receiving a first signaling message for a first operation from a first transmission and reception point (TRP); A step of receiving a second signaling message for a second SBFD (subband full duplex) operation from a second TRP; When the performance of the first operation and the second SBFD operation is instructed in the first time interval, a step of selecting one of the first operation and the second SBFD operation based on a preset criterion; and A step of performing the above one operation in the above first time interval, The above first operation is an UL (uplink) operation, a DL (downlink) operation, or a first SBFD operation. Terminal method.

2. In claim 1, In the first time interval, if the first action and the second SBFD action collide, one action is selected, "If the first time interval is a DL communication interval, the first operation includes DL communication, and the second SBFD operation includes UL communication" or "if the first time interval is a UL communication interval, the first operation includes the UL communication, and the second SBFD operation includes the DL communication", the first operation and the second SBFD operation are determined to be in conflict. Terminal method.

3. In claim 1, The step of selecting one of the above actions is: A step of comparing the first priority of the first operation and the second priority of the second SBFD operation; and A step of selecting one operation having a higher priority among the first operation and the second SBFD operation, Terminal method.

4. In claim 1, The step of selecting one of the above actions is: Comparing a first reception time of the first signaling message and a second reception time of the second signaling message; and A step of selecting the one action indicated by the most recently received one signaling message among the first signaling message and the second signaling message, Terminal method.

5. In claim 1, The step of selecting one of the above actions is: A step of comparing a first CORESET (control resource set) ID (identifier) ​​from which the first signaling message is received and a second CORESET ID from which the second signaling message is received; and A step of selecting one operation indicated by one signaling message having a lower CORESET ID among the first signaling message and the second signaling message, Terminal method.

6. In claim 1, The step of selecting one of the above actions is: A step of checking the type of each of the first signaling message and the second signaling message; and A step of selecting one operation indicated by one signaling message corresponding to a type having a higher priority among the first signaling message and the second signaling message, The above type is RRC (radio resource control) message, MAC (medium access control) CE (control element), or DCI (downlink control information). Terminal method.

7. In claim 1, The method of the above terminal is, Further comprising a step of performing the remaining operations other than the one operation among the first operation and the second SBFD operation in a second time interval after the first time interval. Terminal method.

8. In claim 1, The first time interval is set for TDD (time division duplex) operation or unpaired spectrum operation, and a first subband among the frequency bands for the first time interval is indicated as a UL subband or a DL subband by the second signaling message. Terminal method.

9. As a terminal, Contains at least one processor, At least one processor of the terminal, Receive a first signaling message for a first operation from a first transmission and reception point (TRP); Receive a second signaling message for a second SBFD (subband full duplex) operation from a second TRP; When the performance of the first operation and the second SBFD operation is instructed in the first time interval, one operation among the first operation and the second SBFD operation is selected based on a preset criterion; and Causing the above one action to be performed in the above first time interval, The above first operation is an UL (uplink) operation, a DL (downlink) operation, or a first SBFD operation. Terminal.

10. In claim 9, In the first time interval, if the first action and the second SBFD action collide, one action is selected, "If the first time interval is a DL communication interval, the first operation includes DL communication, and the second SBFD operation includes UL communication" or "if the first time interval is a UL communication interval, the first operation includes the UL communication, and the second SBFD operation includes the DL communication", the first operation and the second SBFD operation are determined to be in conflict. Terminal.

11. In claim 9, When selecting the above one operation, the at least one processor causes the terminal to: Compare the first priority of the first operation with the second priority of the second SBFD operation; and Causing to select one operation having a higher priority among the first operation and the second SBFD operation, Terminal.

12. In claim 9, When selecting the above one operation, the at least one processor causes the terminal to: Comparing the first reception time of the first signaling message and the second reception time of the second signaling message; and Causing to select the one action indicated by the most recently received one signaling message among the first signaling message and the second signaling message, Terminal.

13. In claim 9, When selecting the above one operation, the at least one processor causes the terminal to: Compare the first CORESET (control resource set) ID (identifier) ​​from which the first signaling message is received with the second CORESET ID from which the second signaling message is received; and Causing to select the one action indicated by the one signaling message having the lower CORESET ID among the first signaling message and the second signaling message, Terminal.

14. In claim 9, When selecting the above one operation, the at least one processor causes the terminal to: Check the type of each of the first signaling message and the second signaling message; and Causes to select one action indicated by one signaling message corresponding to a type having a higher priority among the first signaling message and the second signaling message, The above type is RRC (radio resource control) message, MAC (medium access control) CE (control element), or DCI (downlink control information). Terminal.

15. In claim 9, At least one processor of the terminal, Further causing the remaining operations other than the one operation among the first operation and the second SBFD operation to be performed in the second time period after the first time period. Terminal.

16. In claim 9, The first time interval is set for TDD (time division duplex) operation or unpaired spectrum operation, and a first subband among the frequency bands for the first time interval is indicated as a UL subband or a DL subband by the second signaling message. Terminal.

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